What is the meaning of Gdy?

when

introduces a temporal clause; when

as soon as

although, even though

introduces a real conditional clause if

introduces an unreal conditional clause if

introduces a causal clause; because

introduces a clause relating to the previous; as; how

introduces a subordinate clause; that

connects clauses; that

when?

whenever

when

when, as

if

whereas

when; Further details are uncertain.

when, as

if

Source: wiktionary.org