ES options monthly vs weekly

Anyone know how these ES options get broken down?

For example right now JUNE ES options have april expiry:

April 12th
April 19th
April 30th


IB lists the 19th as (ES) options and the 30th as (EW) implying end of month are weekly ?


Are not all these considered weekly options?

 

April 12th is a weekly

April 19th is regular expiration

April 30th is the end of month expiration

 

Thanks

how can 19th be regular expiry there is no April underlying ?

 

I don't know if the terminology is the same with options on equity index futures, but in the physical commodity futures world, April would be called a serial month and its underlying would be the June futures contract.

 

thanks

 

End of month symbol should be EW, weekly - EW1, 2, 4

 

yep. I just thought that there were options only in the underlying ( underlying has quartely cycles)

So there is no difference trading the different instruments they all have the liquidity etc., its just whatever your time horizon is. Its all just time.

 

There's also April 5th, which is EW1 for April.