Awal bulan April 1937 (Masehi) bertepatan dengan tanggal 18 Muharram 1356 (Hijriyah), 19 Sura 1868 (Jawa), 13s Margasira 1871 (Candra), dan 10 Kapat 1859 (Surya). Sedangkan akhir bulan April 1937 (Masehi) bertepatan dengan tanggal 18 Shofar 1356 (Hijriyah), 18 Sapar 1868 (Jawa), 13s Posya 1871 (Candra), dan 8 Kalima 1859 (Surya).
| 18 Muharram 1356 | Hijriyah | 18 Shofar 1356 | | 19 Sura 1868 | Jawa | 18 Sapar 1868 | | 13s Margasira 1871 | Candra | 13s Posya 1871 | | 10 Kapat 1859 | Surya | 8 Kalima 1859 | |
| Ahad | Senin | Selasa | Rabu | Kamis | Jumat | Sabtu | | | | | | 12s | 9 | | Pahing | | | | Kliwon | | ١٧ | 18 | | | | | | | | 2k | 14 | | Pahing | | | | Kliwon | | ٢٢ | 23 | | | | | | | 7k | 19 | | Pahing | | | | Kliwon | | ٢٧ | 28 | | | | | | | | | | | | | | | | | | | | | | | | | 13s | 8 | | Pahing | | | | Kliwon | | ١٨ | 18 | | | |
| Masehi | Hijriyah |
| Tanggal | Tanggal | Peringatan |
| 1 April 1937 | 18 Muharram 1356 | |
| 2 April 1937 | 19 Muharram 1356 | |
| 3 April 1937 | 20 Muharram 1356 | |
| 4 April 1937 | 21 Muharram 1356 | |
| 5 April 1937 | 22 Muharram 1356 | |
| 6 April 1937 | 23 Muharram 1356 | |
| 7 April 1937 | 24 Muharram 1356 | |
| 8 April 1937 | 25 Muharram 1356 | |
| 9 April 1937 | 26 Muharram 1356 | |
| 10 April 1937 | 27 Muharram 1356 | |
| 11 April 1937 | 28 Muharram 1356 | |
| 12 April 1937 | 29 Muharram 1356 | |
| 13 April 1937 | 1 Shofar 1356 | |
| 14 April 1937 | 2 Shofar 1356 | |
| 15 April 1937 | 3 Shofar 1356 | |
| 16 April 1937 | 4 Shofar 1356 | |
| 17 April 1937 | 5 Shofar 1356 | |
| 18 April 1937 | 6 Shofar 1356 | |
| 19 April 1937 | 7 Shofar 1356 | |
| 20 April 1937 | 8 Shofar 1356 | |
| 21 April 1937 | 9 Shofar 1356 | |
| 22 April 1937 | 10 Shofar 1356 | |
| 23 April 1937 | 11 Shofar 1356 | |
| 24 April 1937 | 12 Shofar 1356 | |
| 25 April 1937 | 13 Shofar 1356 | Puasa Ayyamul Baidl |
| 26 April 1937 | 14 Shofar 1356 | Puasa Ayyamul Baidl |
| 27 April 1937 | 15 Shofar 1356 | Puasa Ayyamul Baidl |
| 28 April 1937 | 16 Shofar 1356 | |
| 29 April 1937 | 17 Shofar 1356 | |
| 30 April 1937 | 18 Shofar 1356 | |
| Masehi | Jawa |
| Tanggal | Tanggal | Pasaran | Mongso | Wuku | Tahun | Windu | Lambang | Neptu |
| 1 April 1937 | 19 Sura 1868 | Legi | 7 Kadasa | Gumbrek | Ha' | Adi | Kulawu | Kamis (8) + Legi (5) = 13 |
| 2 April 1937 | 20 Sura 1868 | Pahing | 8 Kadasa | Gumbrek | Ha' | Adi | Kulawu | Jumat (6) + Pahing (9) = 15 |
| 3 April 1937 | 21 Sura 1868 | Pon | 9 Kadasa | Gumbrek | Ha' | Adi | Kulawu | Sabtu (9) + Pon (7) = 16 |
| 4 April 1937 | 22 Sura 1868 | Wage | 10 Kadasa | Warigalit | Ha' | Adi | Kulawu | Ahad (5) + Wage (4) = 9 |
| 5 April 1937 | 23 Sura 1868 | Kliwon | 11 Kadasa | Warigalit | Ha' | Adi | Kulawu | Senin (4) + Kliwon (8) = 12 |
| 6 April 1937 | 24 Sura 1868 | Legi | 12 Kadasa | Warigalit | Ha' | Adi | Kulawu | Selasa (3) + Legi (5) = 8 |
| 7 April 1937 | 25 Sura 1868 | Pahing | 13 Kadasa | Warigalit | Ha' | Adi | Kulawu | Rabu (7) + Pahing (9) = 16 |
| 8 April 1937 | 26 Sura 1868 | Pon | 14 Kadasa | Warigalit | Ha' | Adi | Kulawu | Kamis (8) + Pon (7) = 15 |
| 9 April 1937 | 27 Sura 1868 | Wage | 15 Kadasa | Warigalit | Ha' | Adi | Kulawu | Jumat (6) + Wage (4) = 10 |
| 10 April 1937 | 28 Sura 1868 | Kliwon | 16 Kadasa | Warigalit | Ha' | Adi | Kulawu | Sabtu (9) + Kliwon (8) = 17 |
| 11 April 1937 | 29 Sura 1868 | Legi | 17 Kadasa | Warigagung | Ha' | Adi | Kulawu | Ahad (5) + Legi (5) = 10 |
| 12 April 1937 | 30 Sura 1868 | Pahing | 18 Kadasa | Warigagung | Ha' | Adi | Kulawu | Senin (4) + Pahing (9) = 13 |
| 13 April 1937 | 1 Sapar 1868 | Pon | 19 Kadasa | Warigagung | Ha' | Adi | Kulawu | Selasa (3) + Pon (7) = 10 |
| 14 April 1937 | 2 Sapar 1868 | Wage | 20 Kadasa | Warigagung | Ha' | Adi | Kulawu | Rabu (7) + Wage (4) = 11 |
| 15 April 1937 | 3 Sapar 1868 | Kliwon | 21 Kadasa | Warigagung | Ha' | Adi | Kulawu | Kamis (8) + Kliwon (8) = 16 |
| 16 April 1937 | 4 Sapar 1868 | Legi | 22 Kadasa | Warigagung | Ha' | Adi | Kulawu | Jumat (6) + Legi (5) = 11 |
| 17 April 1937 | 5 Sapar 1868 | Pahing | 23 Kadasa | Warigagung | Ha' | Adi | Kulawu | Sabtu (9) + Pahing (9) = 18 |
| 18 April 1937 | 6 Sapar 1868 | Pon | 24 Kadasa | Julungwangi | Ha' | Adi | Kulawu | Ahad (5) + Pon (7) = 12 |
| 19 April 1937 | 7 Sapar 1868 | Wage | 1 Dhesta | Julungwangi | Ha' | Adi | Kulawu | Senin (4) + Wage (4) = 8 |
| 20 April 1937 | 8 Sapar 1868 | Kliwon | 2 Dhesta | Julungwangi | Ha' | Adi | Kulawu | Selasa (3) + Kliwon (8) = 11 |
| 21 April 1937 | 9 Sapar 1868 | Legi | 3 Dhesta | Julungwangi | Ha' | Adi | Kulawu | Rabu (7) + Legi (5) = 12 |
| 22 April 1937 | 10 Sapar 1868 | Pahing | 4 Dhesta | Julungwangi | Ha' | Adi | Kulawu | Kamis (8) + Pahing (9) = 17 |
| 23 April 1937 | 11 Sapar 1868 | Pon | 5 Dhesta | Julungwangi | Ha' | Adi | Kulawu | Jumat (6) + Pon (7) = 13 |
| 24 April 1937 | 12 Sapar 1868 | Wage | 6 Dhesta | Julungwangi | Ha' | Adi | Kulawu | Sabtu (9) + Wage (4) = 13 |
| 25 April 1937 | 13 Sapar 1868 | Kliwon | 7 Dhesta | Sungsang | Ha' | Adi | Kulawu | Ahad (5) + Kliwon (8) = 13 |
| 26 April 1937 | 14 Sapar 1868 | Legi | 8 Dhesta | Sungsang | Ha' | Adi | Kulawu | Senin (4) + Legi (5) = 9 |
| 27 April 1937 | 15 Sapar 1868 | Pahing | 9 Dhesta | Sungsang | Ha' | Adi | Kulawu | Selasa (3) + Pahing (9) = 12 |
| 28 April 1937 | 16 Sapar 1868 | Pon | 10 Dhesta | Sungsang | Ha' | Adi | Kulawu | Rabu (7) + Pon (7) = 14 |
| 29 April 1937 | 17 Sapar 1868 | Wage | 11 Dhesta | Sungsang | Ha' | Adi | Kulawu | Kamis (8) + Wage (4) = 12 |
| 30 April 1937 | 18 Sapar 1868 | Kliwon | 12 Dhesta | Sungsang | Ha' | Adi | Kulawu | Jumat (6) + Kliwon (8) = 14 |
| Masehi | Sunda |
| Tanggal | Candra | Surya | Pasaran | Wuku | Tahun | Windu |
| 1 April 1937 | 13s Margasira 1871 | 10 Kapat 1859 | Pon | Pahang | Cacing | Kuntara |
| 2 April 1937 | 14s Margasira 1871 | 11 Kapat 1859 | Wage | Pahang | Cacing | Kuntara |
| 3 April 1937 | 15s Margasira 1871 | 12 Kapat 1859 | Kaliwon | Pahang | Cacing | Kuntara |
| 4 April 1937 | 1k Margasira 1871 | 13 Kapat 1859 | Manis | Kuruwelut | Cacing | Kuntara |
| 5 April 1937 | 2k Margasira 1871 | 14 Kapat 1859 | Pahing | Kuruwelut | Cacing | Kuntara |
| 6 April 1937 | 3k Margasira 1871 | 15 Kapat 1859 | Pon | Kuruwelut | Cacing | Kuntara |
| 7 April 1937 | 4k Margasira 1871 | 16 Kapat 1859 | Wage | Kuruwelut | Cacing | Kuntara |
| 8 April 1937 | 5k Margasira 1871 | 17 Kapat 1859 | Kaliwon | Kuruwelut | Cacing | Kuntara |
| 9 April 1937 | 6k Margasira 1871 | 18 Kapat 1859 | Manis | Kuruwelut | Cacing | Kuntara |
| 10 April 1937 | 7k Margasira 1871 | 19 Kapat 1859 | Pahing | Kuruwelut | Cacing | Kuntara |
| 11 April 1937 | 8k Margasira 1871 | 20 Kapat 1859 | Pon | Marakeh | Cacing | Kuntara |
| 12 April 1937 | 9k Margasira 1871 | 21 Kapat 1859 | Wage | Marakeh | Cacing | Kuntara |
| 13 April 1937 | 10k Margasira 1871 | 22 Kapat 1859 | Kaliwon | Marakeh | Cacing | Kuntara |
| 14 April 1937 | 11k Margasira 1871 | 23 Kapat 1859 | Manis | Marakeh | Cacing | Kuntara |
| 15 April 1937 | 12k Margasira 1871 | 24 Kapat 1859 | Pahing | Marakeh | Cacing | Kuntara |
| 16 April 1937 | 13k Margasira 1871 | 25 Kapat 1859 | Pon | Marakeh | Cacing | Kuntara |
| 17 April 1937 | 14k Margasira 1871 | 26 Kapat 1859 | Wage | Marakeh | Cacing | Kuntara |
| 18 April 1937 | 1s Posya 1871 | 27 Kapat 1859 | Kaliwon | Tambir | Cacing | Kuntara |
| 19 April 1937 | 2s Posya 1871 | 28 Kapat 1859 | Manis | Tambir | Cacing | Kuntara |
| 20 April 1937 | 3s Posya 1871 | 29 Kapat 1859 | Pahing | Tambir | Cacing | Kuntara |
| 21 April 1937 | 4s Posya 1871 | 30 Kapat 1859 | Pon | Tambir | Cacing | Kuntara |
| 22 April 1937 | 5s Posya 1871 | 31 Kapat 1859 | Wage | Tambir | Cacing | Kuntara |
| 23 April 1937 | 6s Posya 1871 | 1 Kalima 1859 | Kaliwon | Tambir | Cacing | Kuntara |
| 24 April 1937 | 7s Posya 1871 | 2 Kalima 1859 | Manis | Tambir | Cacing | Kuntara |
| 25 April 1937 | 8s Posya 1871 | 3 Kalima 1859 | Pahing | Medangkungan | Cacing | Kuntara |
| 26 April 1937 | 9s Posya 1871 | 4 Kalima 1859 | Pon | Medangkungan | Cacing | Kuntara |
| 27 April 1937 | 10s Posya 1871 | 5 Kalima 1859 | Wage | Medangkungan | Cacing | Kuntara |
| 28 April 1937 | 11s Posya 1871 | 6 Kalima 1859 | Kaliwon | Medangkungan | Cacing | Kuntara |
| 29 April 1937 | 12s Posya 1871 | 7 Kalima 1859 | Manis | Medangkungan | Cacing | Kuntara |
| 30 April 1937 | 13s Posya 1871 | 8 Kalima 1859 | Pahing | Medangkungan | Cacing | Kuntara |
