Modify timestamp code to be threadsafe and use less-parser-ambiguous Z/gmtime, not localtime and tz offsets.
Modify timestamp code to be threadsafe and use less-parser-ambiguous Z/gmtime, not localtime and tz offsets.

janmejay/medida,Payshares/medida,janmejay/medida,Payshares/medida,janmejay/medida,Payshares/medida,Payshare/medida,stellar/medida,stellar/medida,stellar/medida,Payshare/medida,Payshare/medida,stellar/medida,janmejay/medida