Month (hollow) is time unit, symbol: [mo]. Definition of 1 month (hollow) ≡ 29 d. Hollow month = 29 days × 86400 sec.. Compared to second, month (hollow) is bigger unit.
• 1 [mo] = (exactly) `2505600` [s]
• 1 [s] = (exactly) `1/(2505600)` [mo] = 3.9910600255428 × 10-7 [mo]
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Multiply convert of month (hollow) to common time units:
[mo]Time units sort by name in ABC order
Pedersen O. (1983). "Glossary" in Coyne, G., Hoskin, M., and Pedersen, O. Gregorian Reform of the Calendar: Proceedings of the Vatican Conference to Commemorate its 400th Anniversary. Vatican Observatory.